Row-boat seat



(No Model.) 2 sheets shee t '1.

M. F. DAVIS.

ROW BOAT SEAT.- No. 282,855. Patented Aug. 7,1883.

I WITNESSES 1 IIVVENTOI? I I II a I I I w 5 I I F Z844 llornuyQSheets-Sheet 2 (No Model.)

M. P. DAVIS.

ROW BOAT SEAT.

Patented Aug. 7, 1883.

w/r/vEssEs N. PETERS. P'hchrLilhognphun Walhmgion. DC.

' UNITED STATES PATENT OFFICE.

MIoHAEL F. 'nAvIs, OF PORTLAND, MAINE.

ROW-BOAT SEAT.

SPECIFICATION forming part of Letters Patent No. 282,855, dated August7, 1883.

Application filed February 15, 1882. (No model.)

To all whom it may concern:

Be it known that I, MICHAEL F. DAvIs, a citizen of the United States,residing at Portland, in the county of Cumberland and State of Maine,

have invented certain new and useful Improvements in Row-Boat Seats 5and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it ap- IO, pertains to make and use the same, referencebeing had to the accompanying drawings, and to letters or figures ofreference marked thereon, which form a part of this specification.

Figure 1 is a plan view of a seat provided I 5 with my anti-frictionrolls and in position in a row-boat. Fig. 2 is a section on line 00 m,Fig.

' 1. Fig. 3 is a detail in perspective of the rolls under the body ofthe seat. Fig. 4 is a front elevation, partly in section, to show thelateral rolls in position under the seat. Fig. 5

shows in two views, respectively in end and side elevation, a gang ofanti-friction rolls.

Fig. 6 is a perspective showing the rolls with a flanged tire; Fig. 7,aperspective view of these gang-rolls applied at front and rear of theseat. Fig. Sis a detail in section, showing the gang-rolls applied tothe rear supporting shaft of the seat.

This invention relates to improvements in racing-boats; and it consistschiefly in details concerning the mounting of the seat.

In the accompanying drawings, A denotes the boat, and B thesliding seat.This seat is mounted at the rear on shaft 0 by means of the 5 boxes 1),preferably two, one on each side of the seat.. The bearings in theseboxes are quite long, so as to allow considerable fore-andaft movementof the shaft 0. This shaft is usually made of metal pipe. Each box I)has 0 inside a gang of anti-friction rolls, D. (See Fig. 5.) This gangis made of aseries of small rolls, d, mounted between rings (1, so thata set of rolls come on one side and a set on the other, the axis of therolls in the last being 5 between the peripheries of the first in properalternation, so that when the gang is used the friction comes onalternate sides from roll to roll. Each gang is thus free to have arotary motion in the box I), which the shaft 0 is supported by, andrevolves on their inner peripheries. 'The outer ends of the shaft 0 arealso supported on like rolls, D. The track of these rolls may be merelythe upper face of the gunwales F F of the boat; or a steel or suitabletrack may be laid onthe frame-work of the boat. The front or aft end ofthe seat is supported on the short shaft 12 which, at its ends, isjournaled in the boxes I), and these boxes are, on their inside, of thesame shape and carry gang-rolls as do boxes b, and in the mid- 6o dlethis shaft 22 revolves in and is supported by the largergang-rolls D,which run on the track F, extending fore and aft of the boat, andsupported by the keelson. The side boxes,

1), will come a little above the seat, and the '65 center gang, D, willplay in a slot in the front end of the seat On the under side ofthe'seat is fixed the channel a, which comes over the center track, F,and is sustained by the balls each of which comes intermediately betweeni a pair of the rolls 9. These rolls are attached to the independentpiece or pieces G, so as to revolve, thus affording a very easy andmovable support for the seat. The forward and rear movement of thiscentral support under the seat may be controlled by suitable stops, sothat it cannot pass from under the seat. The balls 9 are preferably usedbut it is obvious thatmany of the advantages now de scribed could besecured by the use of the rolls alone. I may also use balls alone onthis track, keeping them in place by suitable stops.

At the extreme fore-and-aft part of the seat are fixed the verticalrolls D. There are two forward and two aft. Each of said rolls revolveson the end of a vertical rod, b suspended from the seat. There is a pairof the rolls at front and a pair aft, each pair placed so as to have aroll on each side of the sill F of the track F, so as to come under itsedge f. 0 The office of these rolls D is to overcome lateralfriction onthe seat, always arising in using a sweep or in rough water, and bymeans of them the seat will always be held firm in position, and-yet bewholly free to move fore and 5 aft along the track. These rolls D areexactly similar in construction to those above described in Fig. 5.

The bearing-boxes b and b are each elliptica-lly shaped, to allownecessary fore and aft :00 movement of the shafts O and b, so as toprevent as much as possible the friction of the shafts and their rolls,and also to enable the movements of the seat to be more readily andsuitably effected.

Having thus described my invention, what I consider new, and desire tosecure by Letters Patent, is

1. In a row-boat, a seat supported by suitable anti-frictional bearingson shafts movable 011 anti-frictional bearings and by longitudinalanti-frictional bearings, whereby said seat has free fore-and-aftmovement, substantially as described.

2. In a row boat, a seat suspended from shafts which are movablysupported, the one at the sides of the seat and the other beneath theseat, by anti-friction bearings, substantially as described.

3. In a row-boat, a seat movably supported by central anti-frictionalbearings aft, and by side anti-frictional bearings forward and bylongitudinal anti-frictional bearings beneath, substantially asdescribed.

4-. The seat B, supported at the rear by anti frictional gang-rollbearings on a shaft having at its ends anti-frictional gang-rolls,and'at the front centrally supported on anti-frictional gang-rollbearings, substantially as described. 5. In a row-boat, a seat supportedon and movable by means of anti-frictional bearings acting verticallyand laterally, said bearings not being attached'to said seat,substantially as described. y

6. A row-boat having a movable seat, and in combination therewithanti-frictional bearring-shafts, said shafts being mounted in boxesconsiderably longer than the diameters of the shafts, so as to permit amovement of the shafts lengthwise of theboxes, substantially as stated.

7. In a row-boat, a seat, B, combined with the independent piece orpieces G, provided with anti-frictional rolls bearing on the' tracks orguideways, substantially as described.

8. The combination, withthe seat of arowboat, of anti-friction rolls or.balls operating against lateral supports, substantially as described.

9. In a row-boat, a seat provided with antifrictional supports, wherebyit is sustained and is movable, combinedwith lateral anti-frictionalrolls, substantially {1L described.

10. In a ro W-boat, the combination of the seat B, supported andmovable, as described, with the gunwales F, substantially as set forth.

11. The seat B, mounted on shaft 0, as de scribed, at its rear end, andon shaft 1) at its front end, each of said shafts being provided withrolls D, substantially as set forth.

12. In combination with the seat B, having the channel a under it, thetrack F, piece G, rolls g, and balls 9, substantially as set forth.

I11 testimony whereof I affix my signature in presence of two witnesses.

MICHAEL F. DAVIS.

Witnesses:

JOHN B. MILLs,

FRANCIS G. INGEBSOLL.

